Ro atmospheric storage tank without need of pressure tank or electric pump

ABSTRACT

An Atmospheric Storage Tank designed to be an alternative to the existing RO pressure storage tank; it functions on water pipeline pressure. It eliminates the disadvantage of subjecting the RO system to back pressure on feed water which reduces the efficiency of the system and it also will have higher probability of leakage. It requires a Pumping Gadget to pump the water when it is installed below the faucet. It is primarily designed, although not exclusively, to be used together with the ZERO WASTE RO system under patent application PCT/SG2015/000124 where there waste water tank to store the pipeline water and when combined, we can have an economical and simplified RO water filter system with less maintenance.

I) TECHNICAL FIELD

An Atmospheric Tank (hereinafter referred to as “AST”) that does not require pressure tank to activate the water supply to the Reverse Osmosis Water filter system (hereinafter referred to as “RO”) and to pump the water with pressure; and it also does not require an electric pump to pump the water for collection; it is designed for use in RO filter system applying the theory in physic.

III) BACKGROUND

1) The conventional RO system usually utilizes a pressure water tank, made of steel usually, to store the filtered water from the system. The pressure storage tank utilizes pressure in the tank when it is filled with water, to pump the water to faucet outlet for usage when the faucet is turned on. The pressure in the tank fluctuates substantially between empty and full tank. The efficiency of the RO system will be reduced when approaching full, i.e. least efficient when is full as the incoming filtered water is subjected to the higher back pressure from the pressure tank. It also has bladder in the tank which takes up space and reduces the storing capacity of the tank. The pressure tank effectively is able to store from 50% to 75% of the tank size.

2) It also relies on electrical device to turn on the water supply to the RO when water pressure and water level in the tank is low.

3) The AST for which patent rights are herewith sought for does not rely on pressure to function, it is subjected to only constant atmospheric pressure, nor does it require an electric pump or electricity to function. It also does not require an electrical device to activate and cut off the water supply to the RO system

5) The AST is designed for use together with the “Zero Waste” RO filter under patent application PCVSG2015/000124 (hereinafter named “WT”) under the same applicant hereof, although not exclusively.

IV) DISCLOSURE

1) The Atmospheric Storage Tank is a normal rectangular water storage tank made of conventional material used in the industry. It is used for storing the filtered water from the RO system but without the bladder bag. (FIG. 1) is the plan view of the AST with cover on; dimensions are flexible depending on requirement. It has an incoming from the RO (FIG. 1 ref 1); it also has an overflow outlet and discharge to the drainage in case of malfunctioning of the control (FIG. 1 ref 2). It has a connection provision to the Valve Box (FIG. 1 ref 4) and two connection provisions for securing the Valve Box (FIG. 1 ref 3) to the AST.

2) (FIG. 2) is the plan view of the AST without the cover and showing the connection to it. It has a Float (FIG. 2 ref 5), Valve Box (FIG. 2 ref 6) and a Pumping Gadget (FIG. 13). The Pumping Gadget is not shown in (FIG. 2). It depends on the level at which it is installed; the AST will not have a Pumping Gadget when it is installed above the RO faucet outlet level. The Pumping Gadget will be covered later. The Valve Box has an inlet of water supply from the pipeline and outlet to the RO unit (FIG. 2 ref 7 and ref 8).

When the AST is installed above the faucet level, the AST with the pipeline supply connected, together with the Float Valve will be able to provide a system where filtered water is stored in the AST with the Float Valve opening and closing automatically and the filtered water collected from the faucet when the faucet is opened. When the AST is installed above faucet level, the flow from the faucet will be on gravitational force as the AST is subjected only to atmospheric pressure. The AST will also not have any connection for discharge of water into the drainage or the (WT).

When the AST is installed below the faucet level, it requires a Pumping Gadget and a special faucet, and it will have connection to the drainage or WT from the outlet of the driving wheel as explained later. Below are the details.

3) The Float Valve consists of a Float and a Valve Box. The purpose of the Float Valve is to provide an alternative to the function of the pressure tank and the electrical device.

The Valve Box is installed on the outside of the AST and the Float inside the AST. (FIG. 3) is the plan view and (FIG. 4) is the elevation view of the Valve Box. The Valve Box is fixed to the AST at two points (FIG. 1 ref 3) with any conventional fixing methods. In between the two points is the connection from the Float side to the Valve Box (FIG. 2 ref 6 and FIG. 5).

4) The Valve Box has two main components inside, the Valve a) and the miniature seesaw-like structure b), sharing and rotate on a common shaft.

a) Valve

The Valve consists of a small rectangular block (FIG. 5 ref 15) and a flat plunger like piece with the fulcrum (FIG. 5 ref 17) fixed to the shaft (FIG. 5 ref 14), and the shaft is supported by two ball bearings (FIG. 5 ref 12 and ref 13). On either side of the block are the water incoming inlet and outgoing outlet. The two tubing are encased in the block and meet at the gap of the Valve. When the shaft rotates, the plunger like piece will move up and down of the block, i.e. closing and opening of the Valve.

The tubing is reduced in diameter (FIG. 5 ref 16) before it is connected to the block and out-going is also reduced similarly. The purpose is to reduce the pressure in the pipeline at the Valve so that the chances of leakage are lower. There is also a provision for seepage or leakage at the Valve so that when the Valve is shutdown, the water seepage will be released through it (FIG. 6 ref 21). FIG. 6 ref 20) is the plunger like piece. (FIG. 7) and (FIG. 8) are the enlarge cross section of the plunger like piece with (FIG. 7) showing the plunger like piece closed and (FIG. 8) showing the plunger like piece opened. The horizontal shaded area is the water proofing material. (FIG. 7 ref 22) and the perimeter is also lined with water proofing material (FIG. 7 ref 23). (FIG. 8 ref 24) is the end of the arm that is attached with a steel rod for closing and opening of the valve. The steel rod and the arm are loosely linked with a support in rounded shape so that there will not be off centre force on the plunger like piece when closing and opening. (FIG. 8 ref 25) is the block.

b) Seesaw Like Structure

The seesaw like structure (FIG. 5 ref 18 and ref 19 and FIG. 9) is also fixed to the same shaft as that of the Valve. It consists of a track with a ball bearing travelling on it (FIG. 10 ref 29). Supported on the ball bearing is a piece of lead weight. The weight of the whole assembly will make the ball bearing travel from one side to the other side when the shaft rotates. There is a sudden drop (FIG. 9 ref 26) at the end of the track which will prevent the ball bearing from moving the minute the shaft rotates; it will start to move only when the rotation reach certain level when the bottom of the drop is higher than the fulcrum point.

There is a piece of soft cushioning material at either side of the lead an at the bottom (FIG. 9 ref 27) to reduce the effect of impact sound when the lead hits the wall, and also to limit the movement of the seesaw like structure. (FIG. 10) shows the enlarge detail of the whole assembly; the top track (FIG. 10 ref 28) has a guardrail to prevent the ball bearing from falling out; the bottom track (FIG. 10 ref 30) has an upturn also help to guide the ball bearing to travel along the track; (FIG. 10 ref 29) is the ball bearing and (FIG. 10 ref 31) is the steel member supporting the lead and (FIG. 10 ref 32) is the holder on the lead weight for the steel member to hold the lead. (FIG. 10 ref 33) is the lead weight.

The track is set at an angle parallel to the Valve arm so that when the ball bearing assembly moves from one side to the other side, it will be the closing and opening of the Valve at the same time. The exact size of the lead weight has to be calibrated so that it will provide sufficient force for moving up and down the Valve; or the length of the track can be increased to achieve the required force.

The Float side shaft and the Valve Box side shaft are not tightly linked (FIG. 12). The two shafts are not connected; it is separated by a small gap. Both the Float side shaft and the Valve Box side shaft have a capping with a protruding extension which is fixed to the ends (FIG. 11 ref 34 and ref 35 FIG. 12 ref 36 and ref 37)

The protruding extension on the float side (FIG. 11 ref 34) is the guiding member that follow the rotational effect of the Float which will move the two protruding extension (FIG. 11 ref 35) on the Valve Box side, clockwise or anti clockwise, which then will cause the ball bearing assembly to move from one side to the other side when the seesaw like structure rotate beyond the level where the bottom of the sudden drop (FIG. 9 ref 26) is higher than the fulcrum.

The Float initiates the rotational force but does not control the closing and opening of the Valve. The Valve is controlled by the ball bearing assembly which opens and closes the Valve when moving from one side to the other side. The movement of the protruding extension on the Float side will be limited to within the ambit of the two protruding extensions on the Valve Box side. When the single protruding extension on the float side starts to rotate, clockwise or anti-clockwise, it will push one of the two protruding extensions on the Valve Box side, up to a point where the ball bearing assembly starts to move to the opposite and reverse the position of the Valve; the single protruding extension then stops and wait for the Float to initiate the opposite direction rotation; but because the angle at which the two protruding extensions are set at is wider than the ambit of movement of the single protruding piece, the opposite rotation, when the Valve is reverse, will not trigger the lead assembly initially as the single protruding piece will not be in contact of the two protruding extensions, until later and It reaches the level where the bottom part of the drop is higher than the fulcrum. The ambit of movement of the single protruding piece is limit to the two initial movement of the lead assembly.

It functions automatically as described above once connected and water supply turned on.

This will enable the system to close and open the Valve at short interval abruptly. The sensitivity of the Valve can be adjusted by varying the depth of the sudden drop and at how wide an angle the two extension protruding pieces are set at. The deeper is the drop the less sensitive it will be; and vice versa. The wider the angle of the two protruding extensions are set at will also reduce the sensitivity of the Valve.

This is important for maintaining the efficiency of the RO and also the quality of the water produced using the RO filter will be maintained. (FIG. 12 ref 38) is a transparent cover to prevent dust from contaminating the parts.

5) The Float Valve does not control the water supply from the pipeline directly into the AST as in the case of most of the conventional valve. The supply is to the RO system which then also will fill up the AST but with filtered water, and at much slower pace.

6) There is only connection from the AST to the RO faucet outlet, and the inlet from the pipeline to the Valve and from the Valve to the RO system when the AST is installed above the faucet level.

Where the situation permits, the AST should always to be installed above the outlet of the faucet level.

7) When the AST is installed below the RO faucet level, Pumping Gadget will be required. The Pumping Gadget consists of two miniature flywheels (FIG. 13) and a special faucet. The flywheels are encased in cover and have small fins that are spaced at few mm intervals.

The two miniature flywheels consist of one driving side (FIG. 14) and one delivering side (FIG. 15). There is incoming water from the pipeline (FIG. 14 ref 39) and out-going water to the drainage or WT (FIG. 14 ref 40).

The driving side has a much smaller dimension than the delivering side, other than the diameter, which is the same. The reduction in diameter is to increase the flow energy. There is also an ordinary flow restriction valve for adjusting the strength of the flow to the required level.

The delivering side has an inlet inside the AST (FIG. 15 ref 41) and an outlet outside the AST (FIG. 15 ref 42). (FIG. 15 ref 43) shows the fins. There is a thin plate that covers both sides of the flywheel. (FIG. 16 ref 44) The flywheels are driven by a common shaft (FIG. 16 ref 45).

The common shaft is placed within a roller material (FIG. 16 ref 47) which will allow the shaft to rotate freely with very little resistance. There is also a cover that prevents dust from entering (FIG. 16 ref 46). At the centre of the shaft, there is a barrier to prevent the water from either sides of it from crossing (FIG. 16 ref 48). Any seepage or leakage from the flywheels will go into the drainage or WT through the outlet (FIG. 16 ref 49).

The special faucet is a normal one when the AST is installed above it with only a provision for water inlet (FIG. 17 ref 50). When the Pumping Gadget is required; it will have provision for inlet and outlet for pipeline water (FIG. 18 ref 51 and ref 52 FIG. 19 ref 53 and ref 54). 8) When the faucet is turned on, the pipeline water will flow through the special faucet from the inlet and out to the outlet of the faucet, and continue to flow to the inlet of the driving wheel and out to the drainage or the WT.

The flow of water will simultaneously turn the delivering flywheel which has an inlet of the filtered water and also outlet to the faucet. When the pipeline water starts to flow through, it will drive the filtered water and deliver to the faucet for collection. The faucet controls the flow of the filtered water for collection.

9) The faucet controls the flow of two separate waters, the pipeline water and filtered water simultaneously with the same control but the two waters are on separate passages and paths.

This AST can be an alternative to the pressure tank and electrical device which an ordinary RO system utilizes.

V) BEST MODE OF CARRYING OUT THE INVENTION

The best is to work with established RO System manufacturers to produce the Invention. 

1) An Atmospheric Storage Tank (AST) designed to store filtered water from RO filter without utilising the pressure tank for pumping the water and without an electrical device for activating the supply of water to the RO filter, it works on pressure from the pipeline supply, and are of flexible dimensions; it has a Float Valve which includes a Float and a Valve Box, and a Pumping Gadget with a special Faucet; the Float is in the AST and the Valve Box is outside the AST; the Float and the Valve Box together can open and close at required interval the Valve that controls the water from the pipeline to the RO; where the AST is installed above the Faucet outlet level, the water can be collected from the faucet through gravitational force; where the AST is installed below the Faucet, it will require the Pumping Gadget with the special Faucet; the Pumping Gadget is able to pump the water to the Faucet for collection. 2) The Valve Box recited in claim 1) has two main components inside, a Valve and a seesaw like structure with a ball bearing supporting a piece of lead weight; the two are fixed on to the same shaft parallel and the shaft is supported by two ball bearings; it will follow the movement of the Float and move the lead weight to and from both sides and at the same time open and close the Valve simultaneously; it functions automatically once connected and water supply turned on. 3) The shafts of the Float and the Valve box recited in claim 1) are not in contact, there is a small gap in between; it has extension protruding pieces, with Float side a single extension protrusion and the Valve Box side two extension protrusions; when the single extension piece starts to rotate, clockwise and anticlockwise, it will push one of the two extensions to one side until it reaches a level higher than the fulcrum of the shaft, and the ball bearing assembly starts to move to the opposite side where the Valve reverse its position; when the rotation starts to reverse, it will not move the lead assembly initially as the two protruding extension are set at an angle wider than the ambit of the movement of the single protruding extension and the single extension piece is not in contact with the two extension protruding piece initially when reverse; until it reaches a level that is higher than the fulcrum, lead assembly starts to move back to the opposite side; this enable the Valve to open and close abruptly which will ensure the efficiency of the RO filter and quality of the filtered water; the movement of the single extension protrusion on the float side will be restricted to within the ambit of the two extension protrusion on the Valve Box side shaft, it sets the interval of the opening and closing of the Valve at the points where the lead assembly starts to move; and the interval can be adjusted by adjusting the depth of the sudden drop; the deeper it is the less sensitivity it will be; the angle at which the two protruding extensions are set at also will affect the sensitivity; the wider it is the less sensitive it will be. 4) The Valve recited in claim 1) has tubing reduced in diameter for reduction in water pressure; it also has discharge for water seepage or leakage; and the steel rod is supported loosely on a rounded support for preventing any effect of off centre up and down force on the plunger like piece, and the Valve is covered with waterproofing material. 5) The seesaw like structure recited in claim 2) has a guardrail on top track to prevent the ball bearing from falling out of the track and an up stand at the bottom track to help to guide the ball bearing assembly to travel on the track. 6) The lead weight recited in claim 3) has a piece of soft cushioning material at both ends and the bottom to reduce the effect of the impact sound and to restrict the limit of the movement of the seesaw like structure; it can be calibrated to the required weight for the required force on the plunger like piece; the length of the track can also be increased if necessary to achieve the required force. 7) The AST recited in claim 1) has no connection or flow of water going into drainage or the WT when it is installed above the faucet level; and does not require electricity or pump to function; it functions on gravitational force; when the supply is turned on, it goes to the RO filter which then will fill up the AST. 8) The Pumping Gadget recited in claim 1) is fixed to the AST at the inlet end to the AST on the inside with the delivering wheel on the outside; the driving side, it has an inlet from the water pipeline and an outlet to the drainage or the WT; when the driving wheel rotates, it will simultaneously rotate the delivering wheel which pumps the filtered water to the faucet for collection; there is also a normal flow restrictor for adjusting the flow to the required strength. 9) The two flywheels recited in claim 8) have a piece of separator at the centre of the shaft which will prevent any leakage or seepage of water from both sides from crossing; it will discharge through the outlet provided. 10) The AST recited in 1) above will have capacity for storing the filtered water without reduction due to presence of bladder like bag in the ordinary pressure tank. 